| Name | Cooldown | Description | SP | Required |
|---|---|---|---|---|
| Arms of the Three | 2 | When Special triggers, boosts damage by 40% of unit's Res and neutralizes foe's "reduces damage by X%" effects from non-Special skills. At start of combat, if unit's Special is ready and unit's Res > foe's Res, reduces damage from attacks during combat and from area-of-effect Specials (excluding Røkkr area-of-effect Specials) by percentage = difference between stats × 3 (max 30%). | 500 | Iceberg |
| This skill can only be equipped by its original unit. | ||||
* Unused restrictions: Cannot use: 
Effects[ | ]
| Effects | Targets | Conditions |
|---|---|---|
| Combat effects | ||
 Boosts damage by X%X = 40% of  Unit's Res | Unit | Special triggers |
 Neutralizes "Reduces damage by X%" |  Foe | |
 Reduces damage by X% (max: 30%)X = 3 x ( Unit's Res - Foe's Res)from attacks & Non-Røkkr AoE Specials | Unit | Special is ready at start of combat & Unit's Res > Foe's Res |
Notes[ | ]
- The Special damage boosting effect of Arms of the Three can be reduced by damage-reduction effects such as
Gust, Atk/Spd Excel, and Dodge.
- A foe equipped with
Embla's Ward, 
Múspellflame, 
Niðavellir Axiom, or Gold Perfection will neutralize all sources of damage during combat except the minimum 1 damage from Umbra Burst weapons. - For more information, see Damage calculation.
- A foe equipped with
- Arms of the Three will neutralize non-Special "reduces damage by X%" effects from Specials such as Vital Astra.
- Arms of the Three will not neutralize Special "reduces damage by X%" effects such as Gust or Laguz Friend 4.
- For more information, see Damage calculation.
- Arms of the Three will not neutralize Special "reduces damage by X%" effects such as
- The damage-reduction effect is calculated after offensive Specials and damage boosting effects such as Arcane Lúin and Dominance.
- If a skill such as Miracle or Everliving Domain can trigger, the damage-reduction effect will not trigger and the user will still survive with only 1 HP.
- "Reduces damage by X%" effects stack multiplicatively, unlike interactions related to the weapon-triangle, such as Triangle Adept and the weapon-triangle advantage boost.
- Special "reduces damage by X%" effects cannot be neutralized or reduced by effects such as Share Spoils or Halves non-Special damage reduction.
- For more information, see Damage calculation.
- If a skill such as
List of owners[ | ]
| Unit | Skill chain | ||
|---|---|---|---|
 | Chilling Wind 5  | Iceberg 5 | Arms of the Three 5 |
In other languages[ | ]
| Language | Name |
|---|---|
| Japanese | 三雄の双刃 |
| German | Waffen der Drei |
| Spanish (Europe) | Filos de los Tres |
| Spanish (Latin America) | Filos de los Tres |
| French | Lames des Trois |
| Italian | Lame dei tre |
| Traditional Chinese (Taiwan) | 三雄的雙刃 |
| Portuguese | Armas dos três |